Home / 7,720.31-11,580.59-2,173.79

Finding the Fourth Proportional to 7,720.31, 11,580.59 and 2,173.79

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Solution

The fourth proportional to 7,720.31, 11,580.59 and 2,173.79 is: 3,260.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,720.31 : 11,580.59 = 2,173.79 : x
  2. Step 2: Convert to fraction form
    7,720.31/11,580.59 = 2,173.79/x
  3. Step 3: Cross multiply
    7,720.31x = 11,580.59 × 2,173.79
  4. Step 4: Simplify right side
    7,720.31x = 25,173,718.27
  5. Step 5: Solve for x
    x = 25,173,718.27/7,720.31
  6. Step 6: Final answer
    x = 3,260.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.